Raise a glass of your favorite beverage to James Gill and Ralph Hemingray, who were granted a patent for "teats" on insulators 116 years ago today. From an engineering perspective, drip points were probably a useless gimmick. But we collectors love them. From top right, CD 151 H.G.CO. [090], CD 257 Hemingray [040], and CD 280 Hemingray [020].